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Karin Knobe

Karin Knobe

Global Head of Development, Rare Diseases at Sanofi

Appears in 1 story

Stories

First BTK inhibitor advances toward approval for warm autoimmune hemolytic anemia

New Capabilities

Leading rilzabrutinib development program

For 50,000 Americans living with warm autoimmune hemolytic anemia, there has never been a treatment specifically designed for their disease. On February 9, 2026, the Food and Drug Administration (FDA) granted breakthrough therapy designation to rilzabrutinib—marking the first time a Bruton's tyrosine kinase (BTK) inhibitor has reached this milestone for the condition. The designation signals the FDA's recognition that this drug may offer substantial improvement over existing therapies.

Updated Feb 9